4
Changes in Ownership
Amphastar Pharmaceuticals, Inc. Filed Acc 0001415889-25-007783
CEO & CHIEF SCIENTIFIC OFFICER acquired 165,222 shares (grant or award)
From the SEC's structured data for this filing
Trades in this filing
| Insider | Date | Transaction | Shares | Price | Value | Owned after | D/I |
|---|---|---|---|---|---|---|---|
| Zhang Jack Y. CEO & CHIEF SCIENTIFIC OFFICER | 2025-03-10 | Grant or award | +116,226 | 2,609,382 | D | ||
| Zhang Jack Y. CEO & CHIEF SCIENTIFIC OFFICER | 2025-03-10 | Grant or award | +48,996 | 1,148,257 | I | ||
| Derivatives | |||||||
| Zhang Jack Y. CEO & CHIEF SCIENTIFIC OFFICER | 2025-03-10 | Grant or award · Employee Stock Option (right to buy) | +246,821 | 246,821 | D | ||
| Zhang Jack Y. CEO & CHIEF SCIENTIFIC OFFICER | 2025-03-10 | Grant or award · Employee Stock Option (right to buy) | +104,052 | 104,052 | I | ||
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